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<h4> Spectral Group Compare </h4>
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Group comparison of time courses is done by comparing the power
spectra between the groups at different frequency bins. Bins are labeled using 
the variable DEFAULT_TR_SPECTRAL_GROUP_COMPARE in &quot;icatb_defaults.m&quot;. The results
of the power spectra comparison is saved in a MAT file having suffix
'*comparison_frequency_bins.mat'. The variables stored in the
file are as follows:

<ul> 
<li> mean_power_group1 - Mean power for group 1.</li>
<li> mean_power_group2 - Mean power for group 2.</li>
<li> tValues - T-values. This variable is used for plotting
the bar graphs.</li>
<li> pValues - p-values.</li>
</ul>



<p class="style1" > Figure 1 shows the T-values of the components in groupings of four at different frequency bins. </p>
<p class="style1" > &nbsp;<img src="images/icatb_spectral_group_compare.jpg" border="0" ></p>


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